Painting the PCB, some chip pin spacing is very small, the line becomes thick after the line becomes green, which is why?
Gas nail gun, into the wall to be equipped with steel row nails, F30 gas nail guns generally priced at 80-150 range, T50 quality better than .
Telephone exchange board output line to the patch panel, by the patch panel and then through the telephone line to the department office wiring closet wiring diagram:
